/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/MeshWeights.h
Compute cotan-weighted centroid of a vertex one-ring. These weights are numerically unstable if any of the triangles are degenerate. We catch these problems and return input vertex as centroid
static FVector3d CotanCentroid ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, int32 VertexIndex )